61448071873 has 2 divisors, whose sum is σ = 61448071874. Its totient is φ = 61448071872.

The previous prime is 61448071829. The next prime is 61448071889. The reversal of 61448071873 is 37817084416.

61448071873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60256993729 + 1191078144 = 245473^2 + 34512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61448071873 is a prime.

It is not a weakly prime, because it can be changed into another prime (61445071873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30724035936 + 30724035937.

It is an arithmetic number, because the mean of its divisors is an integer number (30724035937).

Almost surely, 2^61448071873 is an apocalyptic number.

It is an amenable number.

61448071873 is a deficient number, since it is larger than the sum of its proper divisors (1).

61448071873 is an equidigital number, since it uses as much as digits as its factorization.

61448071873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 61448071873 in words is "sixty-one billion, four hundred forty-eight million, seventy-one thousand, eight hundred seventy-three".